Brittany Locantore O'Keefe, 33, of Middleborough, had to be extricated by fire officials and was taken by medical helicopter to Tufts Medical Center in Boston. Her condition was unknown.

Three children in the vehicle, ages 2, 6 and 10, were taken to Jordan Hospital in Plymouth. Neither their names nor their conditions were immediately released.

Police said the children were properly restrained, either by car or booster seats and by seat belts.

The exact cause of the crash remains under investigation.

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